Only time will tell how important Willian's late winner will be for Chelsea given that it came in a match they were expected to win despite a desperate recent run of form, but it feels like a hugely significant moment in regards to Mourinho's immediate future. Had his team been beaten for the fourth successive fixture or even held tonight, his grip on power at Stamford Bridge would surely have been loosened that little bit further.

That is all we have time for tonight. Thanks for joining us and stay tuned to IBTimes UK for the latest post-match reaction.

A chastening night for Arsenal in Munich and hardly ideal preparation for the latest instalment of the north London derby against rivals Tottenham at the Emirates Stadium on Sunday.

Wenger's side were distinctly unimpressive in defence and gave themselves a mountain to climb by conceding so early on. Giroud's consolation goal was an excellent finish, but it matters preciously little in the context of such a disappointing result that, coupled with Olympiacos' late win against Dinamo Zagreb, leaves them third in Group F and six points adrift of second place.

Qualification for the first knockout stage is not totally out of the question, but it looks like a difficult task now. A place in the Europa League could beckon for the Gunners.

How on earth is it not 5-1? Robben is sent through clear on goal by Thiago, before successfully rounding Cech. He then hesitates to pull the trigger and is thwarted by an excellent, last-ditch sliding challenge from the covering Debuchy.

Robben appeals vociferously for a penalty due to the strength and angle of the tackle, but the referee deems that Debuchy won the ball fairly.

Wenger then uses his remaining two substitutes two introduce young Iwobi and Calum Chambers at the expense of Giroud and Cazorla.

A cruel second-half blow for Chelsea as Dragovic atones for his earlier own goal by pouncing to equalise after Begovic missed a punch and Matic failed to clear with a header. With 13 minutes left to play, Mourinho throws on Hazard and Pedro in search of an important winner.

Arsenal survive a brief penalty scare as Vidal's header is blocked by the hand of Mertesacker.

A golden opportunity for Arsenal to reduce the deficit further is spurned. Superb play from Coquelin to beat his man and provide a perfect low cross for Cazorla, but the latter gets his shot horribly wrong and it balloons high over the bar. It's not been his night.

A crumb of comfort for Arsenal as Giroud gets in between the Bayern defence before chesting down Alexis' cross and acrobatically rifling the ball into the back of the net. Superb finish from the Frenchman.